I mean he's not a statute. I've seen him move around. He feels the pocket a lot better than Tannehill. He doesn't kill drives by holding the ball too long and take unnecessary sacks. Rosen can throw a deep ball. Just don't expect a rocket. Tannehill overthrew his WRs on the deep ball originally while Rosen's deep ball can hang some times. I was just saying that it's not his greatest strength. It's not a huge weakness either. Tannehill improved his mechanics over the years, but Rosen will be more polished as he progresses. Tannehill was pretty accurate, but he can't throw his WRs open like Rosen can. Rosen can put 400+ yards on a defense and make game changing plays while Tannehill struggled with that.
Tannehill would be better right now only because he played for 7 years, but Rosen has a higher ceiling.